SQL linked server using ASE ODBC connection

SQL linked server using ASE ODBC connection

Postby kreitm » Tue 27 Sep 2016 14:17

I'm having some issues using the ASE ODBC driver as a linked server in SQL 2014.

I created and tested the 64 bit ODBC, which works fine.
I created the linked server using the Microsoft OLE DB provider for ODBC drivers.
In the linked server view, i can see the Sybase catalogs and tables correctly.

Queries like this work for certain tables

select * from openquery(sybase, 'select * from claims_detail ')

For some tables, i get the following

OLE DB provider "MSDASQL" for linked server "sybase" returned message "[Devart][ODBC][Adaptive Server Enterprise]Unknown Sql type 0".
Msg 7350, Level 16, State 2, Line 4
Cannot get the column information from OLE DB provider "MSDASQL" for linked server "sybase".

This seems to occur when the sybase table has a column of type tinyint.

I cannot select any single column from a table that has a type of tinyint, regardless of type

The sybase table I am selecting from looks as follows


CREATE TABLE dbo.coil_status
(
coil_status CHAR (2),
description VARCHAR (40),
coil_level TINYINT,
coil_a TINYINT,
coil_b TINYINT,
coil_c TINYINT,
add_datetime DATETIME,
add_user_id INT,
change_datetime DATETIME,
change_user_id INT,
class CHAR (10),
CONSTRAINT coil_status PRIMARY KEY (coil_status)
);


if I try the following

select * from openquery(sybase, 'select coil_status from coil_status ')

I get the following error

OLE DB provider "MSDASQL" for linked server "sybase" returned message "[Devart][ODBC][Adaptive Server Enterprise]Unknown Token 45".
Msg 7320, Level 16, State 2, Line 4
Cannot execute the query "select coil_status from coil_status " against OLE DB provider "MSDASQL" for linked server "sybase".

But this works

select * from openquery(sybase, 'select cast(coil_status as varchar) from coil_status ')

I experience this behavior whenever there is a column of type tinyint in the table being selected. The only way to select from a table with a tinyint column is to cast each column to its specific type.
kreitm
 
Posts: 1
Joined: Tue 27 Sep 2016 14:05

Re: SQL linked server using ASE ODBC connection

Postby MaximG » Mon 24 Oct 2016 11:36

Thank you for the information. We have reproduced the error, connected with using the TINYINT type, while working in the SQL linked server environment. We have already fixed the error, and the fix will be included in the next build. We plan to release the build next week
MaximG
Devart Team
 
Posts: 745
Joined: Mon 06 Jul 2015 11:34


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